CN209296037U - Cable trench operation and maintenance system - Google Patents
Cable trench operation and maintenance system Download PDFInfo
- Publication number
- CN209296037U CN209296037U CN201821561234.3U CN201821561234U CN209296037U CN 209296037 U CN209296037 U CN 209296037U CN 201821561234 U CN201821561234 U CN 201821561234U CN 209296037 U CN209296037 U CN 209296037U
- Authority
- CN
- China
- Prior art keywords
- sensor
- cable
- temperature
- cable duct
- things
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012423 maintenance Methods 0.000 title description 7
- 230000007613 environmental effect Effects 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 10
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 239000002341 toxic gas Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 230000006855 networking Effects 0.000 abstract 3
- 238000004891 communication Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model relates to a cable pit fortune dimension system, this system includes: install the environmental sensor in the cable pit, the intelligent sensing terminal who is connected with environmental sensor, the thing networking gateway of being connected with intelligent sensing terminal, form the ad hoc network between these thing networking gateways, the cloud ware of being connected with thing networking gateway, the application client who is connected with cloud ware to realize the real-time supervision of trouble and the location of fault point in the cable pit, carry out real-time high-efficient comprehensive on-line measuring and supervision to the cable pit, improve the efficiency and the security of cable pit fortune dimension.
Description
Technical field
The utility model relates to intelligent power grid technology fields, more particularly to a kind of cable duct operational system.
Background technique
Power cable is one of key equipment of urban power distribution network, is the important node of smart grid construction.In order to guarantee
The safe and reliable operation of distribution network system promotes early warning and the Ability of emergency management of power grid, improves power supply capacity and improves power supply
Quality guarantees the sustainable development of society, and it is particularly significant to carry out efficient on-line checking, supervision and maintenance to power cable.
Cable duct is underpass, environment closing and without low-tension supply, and it is unsmooth to be easy to appear cable aging quickening, air
The problems such as logical, electric cable heating, can occur lasting shelf depreciation under serious situation, may cause explosive combustion accident.Currently,
Entered in cable duct and overhauled by the detection device that maintenance personal carries mostly, communication signal is weaker in cable duct and cable
Safe condition is unknown in ditch, so that maintenance personal enters after cable duct, there are biggish personal safety hidden danger, and by repairing people
Member carries out failure and is positioned manually, and takes a long time.
Utility model content
Based on this, it is necessary to the unknown problem of safe condition in and cable duct weaker for communication signal in cable duct,
A kind of cable duct operational system is provided.
A kind of cable duct operational system, the system comprises:
The environmental sensor being installed in cable duct；
The intelligent sensing terminal being connect with the environmental sensor；
The things-internet gateway connecting with the intelligent sensing terminal forms ad hoc network between the things-internet gateway；
The Cloud Server being connect with the things-internet gateway；And
The applications client being connect with the Cloud Server.
In above-mentioned cable duct operational system, environmental sensor acquires the environmental information in cable duct in real time, by these environment
Information is sent to intelligent sensing terminal, and intelligent sensing terminal is whole by these environmental informations and intelligent sensing by things-internet gateway
The location information at end is sent to Cloud Server, is analyzed by Cloud Server these environmental informations, obtains analysis result and pre-
Alert information, and analysis result and warning information are sent to applications client, to realize real-time monitoring and the fault point of failure
Positioning, the comprehensive on-line checking of real-time high-efficiency and supervision are carried out to cable duct, improve the efficiency and safety of cable duct O&M.
In one of the embodiments, the things-internet gateway by LoRaWAN mode and/or NB-IOT mode with it is described
Intelligent sensing terminal called, the things-internet gateway are communicated by GPRS network and/or wireless network and the Cloud Server.
In one of the embodiments, the environmental sensor include environment humidity sensor, cable temperature sensor,
Current sensor, partial discharge sensor, gas sensor and smoke sensor device.
The cable temperature sensor is mounted in cable duct middle cable connector in one of the embodiments, the electricity
Cable temperature sensor is configured with preset quantity temperature probe, and the temperature probe is mounted on preset survey on the cable connector
At warm spot.
The cable temperature sensor includes anti-metal temperature-sensitive label and RFID reader in one of the embodiments,
The anti-metal temperature-sensitive label is located in the cable duct at cable core or cable sleeve, and the RFID reader is located at institute
It states outside anti-metal temperature-sensitive label, for reading the core temperature of the cable.
The partial discharge sensor includes ozone partial discharge sensor and Rogowski coil sensor in one of the embodiments,
The ozone partial discharge sensor is passed for detecting the ozone that cable generates atmospherical discharges in the cable duct, the Rogowski coil
Sensor is used to detect cable in the cable duct and discharges over the ground the high-frequency pulse current of generation.
The gas sensor includes combustible gas sensor and toxic gas sensor in one of the embodiments,.
In one of the embodiments, the environmental sensor further include cable identification identifier, press detection sensor,
Liquid level sensor and photosensitive sensor.
The environmental sensor further includes the infrared biography being set at the cable duct well head in one of the embodiments,
Sensor and the vibrating sensor being set to above the cable duct well head.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cable duct operational system in one embodiment；
Fig. 2 is the preferred structure schematic diagram of cable duct operational system in one embodiment；
Fig. 3 is the preferred structure schematic diagram of cable duct operational system in one embodiment；And
Fig. 4 is the preferred structure schematic diagram of cable duct operational system in one embodiment.
Specific embodiment
Below in conjunction with attached drawing, the embodiments of the present invention are described in detail.
In one embodiment, Fig. 1 shows a kind of structural schematic diagram of cable duct operational system, the cable duct O&M system
System includes environmental sensor 10, intelligent sensing terminal 20, things-internet gateway 30, Cloud Server 40 and applications client 50.
Environmental sensor 10 is installed in cable duct, for the environmental information in detection cable ditch.
In one embodiment, as shown in Fig. 2, environmental sensor 10 includes environment humidity sensor 11, cable temperature
Sensor 12, current sensor 13, partial discharge sensor 14, gas sensor 15 and smoke sensor device 16.Wherein, environment is warm and humid
Sensor 11 is spent for the ambient temperature and humidity in detection cable ditch, to judge cable duct ventilation condition, judges cable load indirectly；
Cable temperature sensor 12 is used for the temperature of detection cable ditch middle cable connector, to judge the health status of cable connector；Electric current
Sensor 13 is for the electric current in detection cable；Shelf depreciation situation of the partial discharge sensor 14 for cable in detection cable ditch；
Content of the gas sensor 15 for gas corresponding in detection cable ditch；Smoke sensor device 16 is used for an oxygen of detection cable ditch
Change carbon (CO) content, for judging whether cable is on fire or whether overloads in cable duct.
Intelligent sensing terminal 20 is connect with environmental sensor 10, and is provided with different types of sensor interface, for obtaining
The environmental information for taking environmental sensor 10 to acquire.
Things-internet gateway 30 connects intelligent sensing terminal 20 and Cloud Server 40, for obtaining intelligent sensing terminal 20
Environmental information and the location information of intelligent sensing terminal 20 be sent to Cloud Server 40.
Wherein, it is provided with GPS antenna in intelligent sensing terminal 20, for obtaining the location information of intelligent sensing terminal 20,
The environmental information that the location information and environmental sensor 10 acquire is passed through into things-internet gateway 30 together and is sent to Cloud Server
40, so that the position to intelligent sensing terminal 20 is effectively tracked, while realizing the positioning to fault point.Each things-internet gateway
30 constitute ad hoc network, to improve the communication signal intensity and communication in cable duct operational system by Internet of Things and ad hoc network
Distance, and realize the low-power consumption communication of cable duct operational system.
In one embodiment, intelligent sensing terminal 20 is evil spirit section (magical node) sensor, and evil spirit section sensor is
It, can be effective by the release of eiotview energy technology of Internet of things company based on Internet of Things+internet thinking intelligent sensing terminal
The biosensor power consumption of cable duct O&M is reduced, the comprehensive lower deployment cost of sensor is reduced.
Cloud Server 40, the environmental information for sending to things-internet gateway 30 are analyzed, and analysis result and pre- is obtained
Alert information, and analysis result and warning information are sent to the applications client 50 connecting with Cloud Server 40.
Specifically, Cloud Server 40 records ring when receiving the location information of environmental information and intelligent sensing terminal 20
The location information at the acquisition moment and intelligent sensing terminal 20 of border information, environmental information is monitored for the items in environmental information
Variable carries out data statistics and analysis, obtains the corresponding analysis of environmental information as a result, i.e. every monitored parameters are in different acquisition
The variation tendency of the monitoring numerical value at quarter and every monitored parameters.According to the corresponding predetermined safe range of every monitored parameters, sentence
Break whether the monitoring numerical value for currently acquiring moment items monitored parameters exceeds corresponding safe range, is generated according to judging result
Corresponding warning information.Wherein, monitored parameters are the test object of each environmental sensor.For example, the environment in cable duct is warm and humid
Corresponding gas in degree, the shelf depreciation situation of the temperature of cable duct middle cable connector, the electric current in cable, cable, cable duct
Content etc. is all detection variable.
In one embodiment, warning information may include the fault type occurred in cable duct, position of failure point and event
Hinder severity etc., consequently facilitating maintenance personal is timely and accurately handled the failure in cable duct.Wherein, failure point
Setting to be the location information of corresponding intelligent sensing terminal 20, can also be believed according to the position of fault type and intelligent sensing terminal 20
Breath, sets position of failure point for the position for the environmental sensor 10 for monitoring the fault point.
Wherein, applications client 50 includes management client and maintenance client, and Cloud Server 40 will analyze result and send
To management client, when analyzing in result failure early warning or fault warning, Cloud Server 40 is according to the position of fault point
The Regional Champion's information for determining the position is set, it is corresponding that fault pre-alarming or fault warning are sent to Regional Champion's information
Client is repaired, so that Regional Champion organizes Pit Crew to carry out breakdown maintenance in time, to effectively improve cable duct fortune
Tie up efficiency.
Wherein, the device id of each things-internet gateway 30 and setting for intelligent sensing terminal 20 are stored in advance in Cloud Server 40
These device ids are sent to applications client 50, each things-internet gateway 30 of real-time display in applications client 50 by standby ID
The presence of presence and each intelligent sensing terminal 20, so that user can recognize each things-internet gateway 30 and each in time
Whether intelligent sensing terminal 20 works normally.
In one embodiment, drawing in applications client 50 has electronic map, according to the equipment of each things-internet gateway 30
The device id and device location of ID and device location and each intelligent sensing terminal 20, show each Internet of Things on the electronic map
Net gateway 30 and each intelligent sensing terminal 20, the distribution so as to user to each things-internet gateway 30 and each intelligent sensing terminal 20
It is grasped.
In above-mentioned cable duct operational system, environmental sensor 10 acquires the environmental information in cable duct in real time, by these rings
Border information is sent to intelligent sensing terminal 20, and intelligent sensing terminal 20 is sent these environmental informations by things-internet gateway 30
To Cloud Server 40, these environmental informations are analyzed by Cloud Server 40, and analysis result is sent to applications client
50, to realize the real-time monitoring of failure and the positioning of fault point, to cable duct carry out the comprehensive on-line checking of real-time high-efficiency and
Supervision improves the efficiency and safety of cable duct O&M.
In one embodiment, things-internet gateway 30 is whole by LoRaWAN mode and/or NB-IOT mode and intelligent sensing
20 communication of end, things-internet gateway 30 is communicated by GPRS network or wireless network and Cloud Server 40, to solve in cable duct
Lead in cable duct that signal is bad, the communication higher problem of power consumption so that the communication in cable duct have high-penetration, long range,
The advantage of super low-power consumption increases the efficiency of data transmission in cable duct, provides the safe coefficient of cable duct.
In one embodiment, gateway distance is each preset in city and set up a things-internet gateway 30, every default
Sensor terminal distance installs an intelligent sensing terminal 20 in cable duct, to realize the whole fortune of cable duct in city
Dimension.As illustratively, assume a things-internet gateway, it can be achieved that 3 Internet of Things nets every 3 to 5 kms in the same city
Close the demand signals of 120 square kilometres of covering.
In one embodiment, cable temperature sensor 102 is mounted in cable duct middle cable connector, cable temperature sensing
There are two temperature probe, temperature probe is mounted on cable connector at preset temperature measuring point for device configuration.In measurement cable connector
When temperature, cable temperature sensor reads the temperature value that each temperature probe measures on the cable connector, from these temperature values
Current Temperatures of the maximum value as cable connector are chosen, to form corresponding face by these temperature measuring points, realize cable connector temperature
The planar survey of degree reduces cost, installation difficulty and the data volume of temperature of cable junction measurement, improves temperature of cable junction measurement
Accuracy.
In one embodiment, 1 cable temperature sensor, each cable are installed on each cable connector in cable duct
Temperature sensor is configured with 3 to 6 temperature probes.Cable temperature sensor is radio temperature sensor.
In another embodiment, as shown in figure 3, cable temperature sensor 11 includes 111 He of anti-metal temperature-sensitive label
RFID (radio frequency identification) reader 112, RFID reader 112 pass through for carrying out energy transmission and data transmission decoding
RFID reader 112 reads the temperature information of anti-metal temperature-sensitive label 111 to obtain the core temperature of cable, due to the line of cable
The temperature close of core temperature and cable connector, therefore can will assess the temperature of the core temperature substitution assessment cable connector of cable
Degree improves the accuracy of temperature of cable junction measurement to be effectively reduced the cost of temperature of cable junction measurement.Wherein,
Anti-metal temperature-sensitive label 111 is located in cable duct at cable core or cable sleeve, and RFID reader 112 is located at anti-metal sense
Outside temperature scale label.
In one embodiment, as shown in Figure 4, it is contemplated that the environment and working condition of cable duct, partial discharge sensor 14 wrap
Include ozone partial discharge sensor 141 and Rogowski coil sensor 142, wherein ozone partial discharge sensor 141 is in detection cable ditch
The ozone that cable generates atmospherical discharges, Rogowski coil sensor 142 discharge the high-frequency impulse of generation over the ground for detection cable
Cable, to effectively carry out partial discharge detection to cable duct.
In one embodiment, Rogowski coil sensor 142 is hyperfrequency Rogowski coil sensor.
In one embodiment, gas sensor 105 includes combustible gas sensor and toxic gas sensor, wherein
Combustible gas sensor is organic in cable duct to be judged according to the content of flammable alkanes gas for detecting flammable alkanes gas
Object rots state, judge that the clean conditions and safe condition of cable duct, toxic gas sensor are used to detect hydrogen sulfide indirectly
(H2S) gas is succinctly sentenced with judging the whether long-term soaked and cable aging conditions of cable according to the content of hydrogen sulfide gas
The safe condition of disconnected cable duct.
In one embodiment, gas sensor 105 further includes oxygen sensor, for the oxygen in detection cable ditch,
To judge the safe condition of cable duct according to the content of oxygen.
In one embodiment, environmental sensor 10 further includes cable identification identifier, pressure sensor, liquid level sensor
And photosensitive sensor.Wherein, cable identification sensor is for identifying the cable identification on cable, in cable duct
Cable carry out asset management, the water level and pressure of pressure sensor and liquid level sensor for ponding in detection cable are photosensitive
Whether well lid of the sensor for detection cable ditch is opened.
In one embodiment, environmental sensor 10 further includes infrared sensor and vibrating sensor.Wherein, infrared ray
Sensor is set to cable duct well head, and vibrating sensor is set to above cable duct well head, infrared sensor and vibrating sensing
Device is for detecting whether there is human or animal to swarm into cable duct.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (9)
1. a kind of cable duct operational system, which is characterized in that the system comprises:
The environmental sensor being installed in cable duct；
The intelligent sensing terminal connecting with the environmental sensor, the intelligent sensing terminal are equipped with GPS antenna；
The things-internet gateway connecting with the intelligent sensing terminal forms ad hoc network between the things-internet gateway；
The Cloud Server being connect with the things-internet gateway；And
The applications client being connect with the Cloud Server.
2. the system as claimed in claim 1, the things-internet gateway passes through LoRaWAN mode and/or NB-IOT mode and institute
Intelligent sensing terminal called is stated, the things-internet gateway is communicated by GPRS network and/or wireless network and the Cloud Server.
3. the system as claimed in claim 1, which is characterized in that the environmental sensor includes environment humidity sensor, electricity
Cable temperature sensor, current sensor, partial discharge sensor, gas sensor and smoke sensor device.
4. system as claimed in claim 3, which is characterized in that the cable temperature sensor is mounted on cable in cable duct and connects
On head, the cable temperature sensor is configured with preset quantity temperature probe, and the temperature probe is mounted on the cable and connects
On head at preset temperature measuring point.
5. system as claimed in claim 3, which is characterized in that the cable temperature sensor include anti-metal temperature-sensitive label and
RFID reader, the anti-metal temperature-sensitive label are located in the cable duct at cable core or cable sleeve, and the RFID is read
It writes device to be located at outside the anti-metal temperature-sensitive label, for reading the core temperature of the cable.
6. system as claimed in claim 3, which is characterized in that the partial discharge sensor includes ozone partial discharge sensor and Roche
Coil pickoff, the ozone partial discharge sensor is for detecting the ozone that cable generates atmospherical discharges in the cable duct, institute
Rogowski coil sensor is stated to discharge over the ground the high-frequency pulse current of generation for detecting cable in the cable duct.
7. system as claimed in claim 3, which is characterized in that the gas sensor includes combustible gas sensor and toxic
Gas sensor.
8. the system as claimed in claim 1, which is characterized in that the environmental sensor further includes cable identification identifier, pressure
Force detection sensor, liquid level sensor and photosensitive sensor.
9. the system as claimed in claim 1, which is characterized in that the environmental sensor further includes being set to the cable duct well
The infrared sensor at mouthful place and the vibrating sensor that is set to above the cable duct well head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821561234.3U CN209296037U (en) | 2018-09-25 | 2018-09-25 | Cable trench operation and maintenance system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821561234.3U CN209296037U (en) | 2018-09-25 | 2018-09-25 | Cable trench operation and maintenance system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209296037U true CN209296037U (en) | 2019-08-23 |
Family
ID=67653455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821561234.3U Active CN209296037U (en) | 2018-09-25 | 2018-09-25 | Cable trench operation and maintenance system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209296037U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355638A (en) * | 2020-03-07 | 2020-06-30 | 深圳市中天网景科技有限公司 | Operation and maintenance system, computer equipment and storage medium of Internet of things card connection management platform |
| CN111579106A (en) * | 2020-05-06 | 2020-08-25 | 深圳供电局有限公司 | Cable on-line monitoring device and system |
| CN111766476A (en) * | 2020-07-14 | 2020-10-13 | 广东电网有限责任公司 | Rapid networking and fault early warning device for bypass cable monitoring and early warning method thereof |
| CN113784235A (en) * | 2021-09-15 | 2021-12-10 | 南方电网数字电网研究院有限公司 | Cable current-carrying capacity monitoring system, method and device, gateway equipment and storage medium |
-
2018
- 2018-09-25 CN CN201821561234.3U patent/CN209296037U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355638A (en) * | 2020-03-07 | 2020-06-30 | 深圳市中天网景科技有限公司 | Operation and maintenance system, computer equipment and storage medium of Internet of things card connection management platform |
| CN111579106A (en) * | 2020-05-06 | 2020-08-25 | 深圳供电局有限公司 | Cable on-line monitoring device and system |
| CN111766476A (en) * | 2020-07-14 | 2020-10-13 | 广东电网有限责任公司 | Rapid networking and fault early warning device for bypass cable monitoring and early warning method thereof |
| CN113784235A (en) * | 2021-09-15 | 2021-12-10 | 南方电网数字电网研究院有限公司 | Cable current-carrying capacity monitoring system, method and device, gateway equipment and storage medium |
| CN113784235B (en) * | 2021-09-15 | 2023-12-26 | 南方电网数字电网科技(广东)有限公司 | Cable current-carrying capacity monitoring system, method, device, gateway equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209296037U (en) | Cable trench operation and maintenance system | |
| CN109167435A (en) | Cable trench operation and maintenance method and device | |
| CN205785326U (en) | The comprehensive on-line monitoring system of buried cable | |
| KR100832524B1 (en) | The detecting method and detecting apparatus of cable temperature and gas in underground power cable tunnel using sensing ubiquitous sensor network technology | |
| CN109443440A (en) | Tunnel comprehensive monitoring system | |
| CN108591834A (en) | A kind of pepe monitoring system | |
| CN116317171B (en) | Electric quantity and non-electric quantity internet of things monitoring device | |
| CN208172972U (en) | A kind of smart home system based on zigbee | |
| CN108022412A (en) | Buried cable monitoring and warning system based on Internet of Things | |
| CN103071269A (en) | Novel automatic fire-fighting terminal water testing system | |
| KR102486079B1 (en) | Lightning rod system based on internet of things | |
| CN108982989A (en) | Extra-high voltage DC grounding electrode operating status assessment system based on multi-characteristicquantity quantity information | |
| CN114959716A (en) | Stray current interference test probe for cathode protection pipeline and intelligent monitoring system | |
| CN109520560A (en) | Equipment state detecting method and system | |
| CN102606889A (en) | Gas valve pit leakage monitoring terminal | |
| CN210572666U (en) | Rural power grid distribution transformer temperature monitoring cloud service system based on Internet of things | |
| CN209247923U (en) | A kind of portable power distribution transformer field detection system | |
| CN109445864A (en) | Based on central controlled intelligent fire-pretection system | |
| CN205263986U (en) | Electric fire monitoring and forewarning system based on point type temperature -sensing element | |
| CN208026886U (en) | A kind of L-band aerological sounding device with monitoring and warning system | |
| CN202510988U (en) | Gas valve well leakage monitoring terminal | |
| CN208722410U (en) | A kind of comprehensive monitoring system of traffic signal control system electrical safety | |
| CN207503431U (en) | A kind of remote alarming system | |
| CN207410005U (en) | A kind of energy saving power grid measure voltage ＆ current protective device | |
| CN110320329A (en) | Gas patrolling and checking management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |